Heel clamping device



Dec. 5, 1933. M. A. SHAFFNER 1,938,196 I HEEL CLAMPING DEVICE Filed April 18, 1932 'it travels through the process of manufacture.

features.

Patented Dec. 5, 1933 r Tes;

I 1,938,196 7 HEEL oLAMrIN DEVICE Meldon A; Shaifner, Milwaukee, Wis, Application A ril 18, 1932. SerialNo. 05,915

7 2 Claims- (Griz-) My invention refers to clamps which are particularly adapted to be employed in the process of manufacturing shoes, and it has for its object to provide a simple, economical and effective yieldable or spring clamp for firmly pressing and holding the heel to the shoe proper after gluing the separable parts, whereby the shoe and last may be shifted step by step through the process of manufacturing, to thus dispense with clamping the freshly glued heel to the shoe and stor- "ing the same for an hour or two to set the glue,

thus greatly economizing in time in the process of manufacture.

The specific object of the invention is to pro-* -vide a yieldable clamp and pad for engaging the 'face of the heel, which will not mar the leather.

thereof.

Another object is to provide a quick cam clamp for locking the heel and shoe together after it is freshly glued.

A further object is to provide a clamp which is compact in form and which will also follow closely the contour of the rear portion of the shoe so as not to form awkward obstructions whereby the shoe can be conveniently manipulated as With the above and other minor objects. in view, the invention consists incertain peculiarities of construction and combinaton of parts, as will be fully set forth and subsequently claimed.

In the drawing:

Figure 1 represents a side elevation of a last and shoe portion fitted thereto preparatory to receiving the heel, parts being broken away and in section to more clearly illustrate" structural Figure 2 is a modified form of a clamp arranged for quick predetermined adjustment of a locking cam, and V p Figure 3 is still another form of adjustable looking cam.

Referring by characters to the drawing,'A represents the rear portion of a shoe, B the heel thereof, which is fitted to the'bottom of the shoe, and which has been previously coated with cement, whereby said shoe heel is permanently seminates with a head having a pivot pin 2 extending therefrom, upon which is mounted an eccentrio clamp 3. The cam-portion 4 of the clamp,

when in looking position, is seated inthemetallic thimble D of the last, and the handle 5 which con";

stitutes a portion of the eccentric element, when,

as shown in"its'lockedposition, rests upon the upper corner instep portion of the last. Thus it will be seen that when the clamp is locked in position, there are no projections which would interfere with manipulation of the shoe as it goes through the process of manufacture.

The lower portion of the yoke 1 terminates with a boss 6 having an internally threaded aperture for the reception of an adjusting screw 7, which adjustable screw carries a knurled head '8 at its upper end. Secured to this knurled head 8 is 1 a flexible pad 9 of leather, rubber, or other suitable material.

The pad, as shown, is of less diameter than the base of the heel, whereby, owing to its center positioning with relation -thereto, there is no liability of burring, or otherwise marring the leather heel lift E. In some instances, if de-- sired, I may dispense with the'pad 9, in which case the head 8 of the adjusting screw 7 may constitute a die, whereby a suitable monogram or trademark may be impressed in the heel layer E From the foregoing description it will be observelthat predetermined adjustment of the clamp, with relation to its upper. and lower contact points, may be had by raising or lowering the screw '7 tocompensate for different heights of heel or sizes ofshoes. w 7

When the'clamp is adjusted for its functioning, the pad 9 is placed in'position shown in Figure 1. of the drawing, and the eccentric clamp is swung downwardly to the position shown, whereby tension is exerted upon the spring yoke and the clamp will firmly grip the shoe between the upper and lower points of contact with the heel and last. Furthermore, due to the engagement ofv the handle 5with the last, said engagement serves as a lock to'prevent movement of said clamp in a furtherdownward position, and, obviously, when the clamp is to be disengaged, a simple swing upwardly of the handle will effect the desired releaselof the brace.

.From the foregoing description it"will be seen that after the clamp is put in position, the shoe OFF-ICE.

no additional time is required in the manufacture of the shoe which would otherwise be necessary when the heel is freshly'glued, which in practice, in order to set, ordinarily the shoe would have to be stored for approximately two hours.

Referring especially to Figure 2 of the drawing, I have shown a preferred form of eccentric clamp, wherein the same can be quickly adjusted for variation in throw by means of an elongated slot 10 having a plurality of notches 11 therein, which constitute seats for the pin 2.

Figure 3 shows a similar adjustable means, whereby a maximum and minimum adjustment may be effected by thekeyhole slot arrangement 10. r

I claim:

1. As a new article of manufacture, a clamp for securing and holding heels on their seats during the process of shoe manufacture, comprising a yoke including an inclined arm and an upper curved leg, an inwardly extending flat foot formed on the lower end of the arm, the outer end of the leg being flattened at right angles to said foot, the yoke being formed of spring metal, whereby the foot is free to give relative to the flattened portion of the leg, an adjustable head carried by the foot for engaging the tread of the heel, and an eccentric clamp pivotally connected with the flattened portion of the leg.

2. As a new article of manufacture, a clamp for securing and holding heels on their seats during the process of shoe manufacture, comprising a yoke including an inclinedarm and an upper curved leg, an inwardly extending fiat foot formed on the lower end of the arm, the outer end of the leg being flattened at right angles to whereby to prevent marring of the tread of the heel. r V

V MELDON A. SHAFFNER. 

